﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace MathLib.Geometry
{
    public static class Circle
    {
        public static double Area(double radius)
        {
            return Math.PI * (radius * radius);
        }
        public static double Circumference(double radius)
        {
            return 2 * Math.PI * radius;
        }
    }
}